WO2014075596A1 - Procédé et système pour exécuter une décision de commutation automatique par connexion à double anneau, en fonction du nombre de passerelles enregistrées - Google Patents

Procédé et système pour exécuter une décision de commutation automatique par connexion à double anneau, en fonction du nombre de passerelles enregistrées Download PDF

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Publication number
WO2014075596A1
WO2014075596A1 PCT/CN2013/086895 CN2013086895W WO2014075596A1 WO 2014075596 A1 WO2014075596 A1 WO 2014075596A1 CN 2013086895 W CN2013086895 W CN 2013086895W WO 2014075596 A1 WO2014075596 A1 WO 2014075596A1
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WO
WIPO (PCT)
Prior art keywords
server
gateways
registered
state
timer
Prior art date
Application number
PCT/CN2013/086895
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English (en)
Chinese (zh)
Inventor
孙晓勇
胡盈盈
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP13854804.5A priority Critical patent/EP2922331B1/fr
Publication of WO2014075596A1 publication Critical patent/WO2014075596A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/005—Multiple registrations, e.g. multihoming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/40—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition

Definitions

  • the present invention relates to a softswitch dual-homing disaster recovery technology, and specifically describes how to determine and trigger an automatic switching method and system between dual-homed active and standby servers. Background technique
  • the security and reliability of the dual-homing automatic switching decision determine whether the switching is necessary, whether the timing is accurate, and whether the impact on the system can be minimized to ensure the stability of the softswitch service.
  • the existing common method of determining is that when the heartbeat coupling between the primary and secondary servers is abnormal, the original standby server opens the Mc interface and waits for the gateway to register. When the gateway is successfully registered, it moves to the active state and completes the active/standby switchover.
  • This method judges the timing of the standby master through the Mc interface state, and does not judge the system availability from a global perspective.
  • the false positive rate is relatively high, and the double master is more likely to occur.
  • other abnormal conditions For example, when a heartbeat coupling abnormality occurs simultaneously with a communication abnormality between a service gateway main server, an unnecessary switching occurs due to compliance with the switching decision condition.
  • the original standby server has entered the active state because the Mc interface is activated, and the original primary server just recovers the abnormality, and the remaining gateways can be successfully registered, the dual master state occurs. Summary of the invention
  • the main object of the present invention is to provide a dual-homing automatic switching decision method according to the number of registered gateways, which aims to solve the technical problem of high false positive rate in the prior art.
  • the present invention provides a dual-homing automatic switching decision method according to the number of registered gateways, including the following steps:
  • the standby server detects the number of media gateways switched to the local device according to the trigger signal of the switching decision mechanism. If the number of detected media gateways reaches the threshold, the migration local state is used as the primary function, and the responsibility of the primary server is taken over.
  • the switching decision mechanism for triggering the standby server includes:
  • the dual-homing state management timer timerDHStatus and the media gateway registration detection timer timerMGWReg are started.
  • the timerDHStatus expires and the number of registered gateways is equal to 0 the primary server is put into the standby state, the Men is closed, and the gateway is closed. Drive to the alternate server.
  • the standby server detects the number of media gateways that are switched to the local device according to the trigger signal of the switching decision mechanism. If the number of the media gateways reaches the threshold, the local state of the migration is used as the main function, and the responsibility of the primary server is taken over.
  • the timerMGWReg timer in the standby server is started, and the number of registered gateways is triggered by the loop detection.
  • the standby server is transferred to the active state.
  • the standby server detects the number of media gateways that are switched to the local device according to the trigger signal of the switching decision mechanism. If the number of the media gateways reaches the threshold, the local state of the migration is used as the main function, and the responsibility of the primary server is taken over.
  • the standby server detects heartbeats with other servers
  • the timerDHStatus timer in the standby server is started; if the timer expires, the standby server is transferred to the temporary TEMP state, in the TEMP state, The timer is opened and the MGW is registered. The timerMGWReg and timerDHStatus timers are started. Then, the TEMP state is switched back to the standby SLAVE state. At this time, the Mc port is closed, and the media gateway is driven to another server of the dual-homing system.
  • the above method further includes:
  • the present invention further provides a dual-homing automatic switching decision system according to the number of registered gateways, including a primary server and a standby server, where
  • the primary server is provided with a switching decision mechanism decision module, configured to trigger a switching decision mechanism of the standby server when the heartbeat coupling between the standby server and the standby server is interrupted;
  • the standby server is configured with a switching decision mechanism execution module, configured to detect the number of media gateways switched to the local device according to the trigger signal of the switching decision mechanism, and if the number of detected media gateways reaches a threshold, the local state of the migration is used as a primary function. Take over the responsibility of the primary server.
  • the switching decision mechanism decision module is further configured to:
  • the dual-homing state management timer timerDHStatus and the media gateway registration detection timer timerMGWReg are started.
  • the timerDHStatus expires and the number of registered gateways is equal to 0 the primary server is put into the standby state, the Men is closed, and the gateway is closed. Drive to the alternate server.
  • the switching decision mechanism execution module is further configured to:
  • the timerMGWReg timer in the standby server is started, and the number of registered gateways is triggered by the loop detection.
  • the number of registered gateways is equal to the preset number of media gateways, countActiveMGW, Transfer the standby server to the active state.
  • the standby server further includes:
  • a heartbeat detection module configured to detect heartbeats with other servers
  • the switching decision mechanism execution module is further configured to:
  • the timerDHStatus timer in the standby server is started; if the timer expires, the standby server is transferred to the temporary TEMP state, in the TEMP state, the Mc port is opened, the MGW is registered, and the timerMGWReg and timerDHStatus are started.
  • the timer is triggered by the timerMGWReg timer to detect the number of registered gateways. When the number of registered gateways is equal to countActiveMGW, the standby server is transferred to the active state. If the timerDHStatus timer expires, the TEMP state is switched back to the standby SLAVE state. Port, drive the media gateway to another server in the dual-homed system.
  • the system may further include an alarm device configured to: in the non-switching phase, if a number of actually registered gateways is detected and the countActiveMGW does not match, a security alarm is given; or
  • a security alarm is given when the detected countActiveMGW of the primary and backup server configurations is inconsistent.
  • the present invention determines the number of registered gateways, and performs switching when the number of gateways registered to the standby server exceeds the threshold. From the perspective of the softswitch system, this method can safely and effectively determine the timing of switching, avoiding the shortcomings of existing methods. Under the premise that no additional system consumption is generated, the problem of abnormal switching or dual master state caused by transient failure of the standby server, heartbeat coupling and McC-couple coupling abnormality is solved, and the safety of the switching decision method is improved. Robustness. DRAWINGS
  • FIG. 1 is a flowchart of a method for performing dual-homing automatic switching according to the number of registered gateways according to an embodiment of the present invention
  • FIG. 2 is a MASTER-SLAVE-TEMP shape of a dual-homing server according to an embodiment of the present invention. Schematic diagram of the switching mechanism between states;
  • FIG. 3 is a schematic structural diagram of a module for performing a dual-homing automatic switching decision according to the number of registered gateways according to an embodiment of the present invention.
  • the method for performing dual-homing automatic switching according to the number of registered gateways includes the following steps:
  • Step S10 When the primary server detects that the heartbeat coupling with the standby server is interrupted, triggering a switching decision mechanism of the standby server;
  • Step S20 The standby server detects the number of media gateways that are switched to the local device according to the trigger signal of the switching decision mechanism. If the number of detected media gateways reaches the threshold, the migration local state is active, and takes over the responsibility of the primary server.
  • the threshold of the number of media gateways is an integer greater than 0.
  • an application scenario of the system of the present invention is as follows:
  • a MSC (Mobile Switching Center) A and MSCB form a dual-homed disaster recovery system.
  • MSCA is used as the primary and MSCB is standby.
  • the number of running media gateways, countActiveMGW, is set to 3.
  • MSCA and MSCB have 4 MGWs (Media GateWay, Media Gateway), which are MGW1, MGW2, MGW3 and MGW4.
  • MGW1 has a network failure and exits the service.
  • the MSCA After detecting the fault of the MGW1, the MSCA checks the heartbeat state between the MSCA and the MSCB. If the heartbeat is normal, the MSCA does not trigger the switching decision mechanism of the standby server, and no switching occurs. If at this time, the heartbeat state happens to be abnormal as well.
  • the MSCA judges the status of the MGW1, the MGW2, the MGW3, and the MGW4, and finds that only the MGW1 is abnormal, the MSCA does not close the McC port and is reduced to the standby.
  • the MSCB detects the abnormal heartbeat, it will open the Mc port and wait for the gateway to register. If the network of the MGW1 to the MSCB is normal, it can be registered to the MSCB normally, but the condition that the number of used media gateways is equal to 3, MSCB It will not be replaced and will be used as the main one, and the Mc port will be opened and closed periodically. After the network from MGW1 to MSCA returns to normal, it will continue to register with MSCA, avoiding an unnecessary switchover.
  • the present invention determines the number of registered gateways, and performs switching when the number of gateways registered to the standby server exceeds the threshold. From the perspective of the softswitch system, this method can safely and effectively determine the timing of switching, avoiding the shortcomings of existing methods. Under the premise that no additional system consumption is generated, the problem of abnormal switching or dual master state caused by transient failure of the standby server, heartbeat coupling and McC-couple coupling abnormality is solved, and the safety of the switching decision method is improved. Robustness.
  • the following parameters are preset in the primary server and the standby server:
  • This setting is the dual-homing automatic switching decision threshold.
  • This timer is used to control the state transition of the dual-homed server.
  • timerDHStatus is started. After the timeout, the migration between the three states (MASTER), standby (SLAVE), and temporary (TEMP) is triggered.
  • This timer controls the detection of the number of MGW registrations by the dual-homed server.
  • the foregoing step S10 may include: when detecting a heartbeat interruption, starting a dual-homing state management timer timerDHStatus and a media gateway registration detection timer timerMGWReg, when the timerDHStatus expires, and the number of registered gateways is equal to 0, the primary server is transferred to the standby server. State, close Me n and drive the gateway to the alternate server.
  • the primary server finds a heartbeat interrupt, it starts the timerDHStatus timer and the timerMGWReg timer.
  • the timerMGWReg timer is triggered by a loop to detect the number of registered gateways.
  • the timerDHStatus is also triggered cyclically until the heartbeat is restored.
  • the primary server goes into standby mode, closes the Mc port, and drives the gateway to other servers in the dual-homed system.
  • the foregoing step S20 may include: starting a timerMGWReg timer in the standby server, triggering a loop detection of the number of registered gateways, and when the number of registered gateways is equal to a preset number of media gateway thresholds countActiveMGW, the standby server is transferred to the active state.
  • the foregoing step S20 specifically includes: when the standby server finds that the heartbeat is interrupted, starting the timerDHStatus timer.
  • the standby server goes to the TEMP state.
  • the TEMP state open the Mc port and wait for the MGW to register.
  • the timerMGWReg timer triggers the loop to detect the number of registered gateways.
  • the server goes into the active state.
  • the timerDHStatus timer expires, the TEMP state is switched back to the SLAVE state. At this time, the Mc port is closed and the gateway is driven to another server of the dual-homed system.
  • the switching mechanism between the MASTER-SLAVE-TEMP states of the dual-homing server is as follows: The MASTER state transitions to the SLAVE state when the heartbeat is interrupted, the timerDHStatus expires, and the number of registered MGWs is equal to 0.
  • the SLAVE state and the TEMP state can be migrated in both directions:
  • the SLAVE state migrates to the TEMP state to open the Mc port if the heartbeat is interrupted and the timerDHStatus expires.
  • TEMP state Migrate back to the SLAVE state when timerDHStatus times out and the number of registered MGWs ⁇ countActiveMGW is closed.
  • the TEMP state when the number of registered MGWs is equal to countActiveMGW, it is migrated to the MASTER state to complete the dual-homing automatic switching.
  • the present invention also provides a dual-homing automatic switching decision system according to the number of registered gateways, which can implement the above method.
  • the system includes a primary server and an alternate server, where
  • the primary server is provided with a switching decision mechanism decision module, configured to trigger a switching decision mechanism of the standby server when the heartbeat coupling between the standby server and the standby server is interrupted;
  • the standby server is configured with a switching decision mechanism execution module, configured to detect the number of media gateways switched to the local device according to the trigger signal of the switching decision mechanism, and if the number of detected media gateways reaches a threshold, the local state of the migration is used as a primary function. Take over the responsibility of the primary server.
  • the switching decision mechanism decision module is further configured to:
  • the dual-homing state management timer timerDHStatus and the media gateway registration detection timer timerMGWReg are started.
  • the timerDHStatus expires and the number of registered gateways is equal to 0 the primary server is put into the standby state, the Mc port is closed, and the gateway is closed. Drive to the alternate server.
  • the switching decision mechanism execution module is further configured to:
  • the timerMGWReg timer in the standby server is started, and the number of registered gateways is triggered by the loop detection.
  • the standby server is transferred to the active state.
  • the standby server further includes:
  • a heartbeat detection module configured to detect heartbeats with other servers
  • the switching decision mechanism execution module is further configured to: When the heartbeat interrupt is detected, the timerDHStatus timer in the standby server is started; if the timer expires, the standby server is transferred to the temporary TEMP state, in the TEMP state, the Mc port is opened, the MGW is registered, and the timerMGWReg and timerDHStatus are started.
  • the timer is triggered by the timerMGWReg timer to detect the number of registered gateways. When the number of registered gateways is equal to countActiveMGW, the standby server is transferred to the active state. If the timerDHStatus timer expires, the TEMP state is switched back to the standby SLAVE state. Port, drive the media gateway to another server in the dual-homed system.
  • the system may further include an alarm device configured to: in the non-switching phase, if a number of actually registered gateways is detected and the countActiveMGW does not match, a security alarm is given; or
  • an application scenario of the system of the present invention is as follows:
  • the dual-homed disaster recovery system of a prefecture-level city includes MSC (Mobile Switching Center) A and MSCB.
  • the MSCA is used as the primary, the MSCB is the standby, and the number of running media gateways, countActiveMGW, is set to 3.
  • MSCA and MSCB have 4 MGWs (Media GateWay, Media Gateway), which are MGW1, MGW2, MGW3 and MGW4.
  • MGW1 has a network failure and exits the service.
  • the MSCA After detecting the fault of the MGW1, the MSCA checks the heartbeat state between the MSCA and the MSCB. If the heartbeat is normal, the MSCA does not trigger the switching decision mechanism of the standby server, and no switching occurs.
  • the MSCA judges the status of MGW1, MGW2, MGW3, and MGW4, and finds that only MGW1 is abnormal, MSCA does not close the McC port and drops to standby.
  • the MSCB detects the abnormal heartbeat, it will open the Mc port and wait for the gateway to register. If the network of the MGW1 to the MSCB is normal, it can be registered to the MSCB normally, but the condition that the number of used media gateways is equal to 3, MSCB It will not change and will be used as the main function, and will open and close Mc periodically. mouth. After the network from MGW1 to MSCA returns to normal, it will continue to register with the MSCA, avoiding unnecessary switching.
  • the switching is performed when the number of gateways registered to the standby server exceeds a threshold. From the perspective of the softswitch system, this method can safely and effectively determine the timing of switching, avoiding the shortcomings of existing methods. Under the premise that no additional system consumption is generated, the problem of abnormal switching or dual master state caused by transient failure of the standby server, heartbeat coupling and McC-couple coupling abnormality is solved, and the safety of the switching decision method is improved. Robustness.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Hardware Redundancy (AREA)
  • Telephonic Communication Services (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

La présente invention se rapporte à un procédé et à un système adapté pour exécuter une décision de commutation automatique par connexion à double anneau, en fonction du nombre de passerelles enregistrées. Le procédé selon l'invention comprend les étapes suivantes : un serveur maître déclenche un mécanisme de décision de commutation d'un serveur de veille quand il détecte que la connexion par battement de cœur entre le serveur maître et le serveur de veille est interrompue ; et, sur la base de signaux de déclenchement du mécanisme de décision de commutation, le serveur de veille détecte le nombre de passerelles multimédias qui sont commutées au serveur de veille ; enfin, si le nombre des passerelles multimédias détectées atteint un seuil, le statut du serveur de veille est commuté de sorte que le serveur de veille devienne le serveur maître et endosse les responsabilités du serveur maître. La présente invention se rapporte d'autre part à un système et à un système adaptés pour exécuter une décision de commutation automatique par connexion à double anneau, en fonction du nombre de passerelles enregistrées. La présente invention est apte à résoudre le problème lié à une commutation anormale ou au double statut de serveur maître, qui est provoqué par des anomalies temporaires du serveur de veille et par une anomalie simultanée de la connexion par battement de cœur et de la connexion au port Mc et similaires. L'invention améliore ainsi significativement la sécurité et la robustesse du procédé de décision de commutation.
PCT/CN2013/086895 2012-11-13 2013-11-11 Procédé et système pour exécuter une décision de commutation automatique par connexion à double anneau, en fonction du nombre de passerelles enregistrées WO2014075596A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13854804.5A EP2922331B1 (fr) 2012-11-13 2013-11-11 Procédé et système pour exécuter une décision de commutation automatique par connexion à double anneau, en fonction du nombre de passerelles enregistrées

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CN201210453981.6 2012-11-13
CN2012104539816A CN102970700A (zh) 2012-11-13 2012-11-13 根据注册网关数量进行双归属自动倒换判决方法及系统

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CN111447094A (zh) * 2020-03-27 2020-07-24 深圳融安网络科技有限公司 双机的主从切换方法、终端设备及计算机可读存储介质
CN114884803A (zh) * 2022-04-28 2022-08-09 交控科技股份有限公司 多重冗余状态的处理方法、装置、设备和介质

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CN102970700A (zh) * 2012-11-13 2013-03-13 中兴通讯股份有限公司 根据注册网关数量进行双归属自动倒换判决方法及系统
CN109831325B (zh) * 2019-01-22 2021-09-24 武汉精立电子技术有限公司 一种用于复判的服务器切换系统及方法

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CN114884803A (zh) * 2022-04-28 2022-08-09 交控科技股份有限公司 多重冗余状态的处理方法、装置、设备和介质
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CN102970700A (zh) 2013-03-13
EP2922331A4 (fr) 2015-12-30
EP2922331B1 (fr) 2017-05-17

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